Sparking device for explosive-engines.



No; 860,710. PATENTED JULY 23, 1907. W. A. VAUSE. SPARKING DEVICE FOREXPLOSIVB ENGINES.

APPLICATION FILED MAR.10.1906.

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PATENT OFFICE.

WILLIAM A. VAUSE, OF COLUMBUS, OHIO.

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Specification of 'Letters Patent.

Patented July 23, 1907.

Application filed March 10, 1906. Serial No. 305,203.

To all whom it may concern:

Be it known that 1, WILLIAM A. V .wsn, a citizen of the United States.residing at Columbus. in the county of Franklin and State of Ohio, haveinvented certain new and useful Improvements in SparkingDevices forExplosive-Engines; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the artto which it appertains to make and use thesame.

The objectof this invention is to provide a. simpler, more effective anddurable sparking device for explosive engines than those heretoforeproposed; and the invention consists in the construction herein shownand described, the invention not being confined in its embodiment toprecisely the forms shown in the accompanying drawings. 7

In said drawingsFigure l is a front end view; Fig.

2 is a. sectional view on the line :r.r of Fig. 1; Fig. 3

is a sectional view on the line g,'y of Fig. 2, parts being left infull; Fig. 4 is a sectional view on the line 2-2 of Fig. 3 with partsshown in full, and Fig. 5 is a detail view of the arm for adjusting thedevice to control the time of sparking. p

In the several views 1 designates a carrier provided with a socket 2 forattachment to the cam shaft of the engine. Pivoted to this carrier on a'fulcrum 3 that stands in a planeat right angles to the axis of rotationof the carrier is a bent lever 3 having attached to its upper end asshown, a small shaft or bearing 4, said shaftor hearing extendingapproximately parallel to the axis of the carrier.

5 designates contact wheel or roller that is journaled to rotate on theshaft or hearing 4. A coiled spring (5 secured to the carrier and to thelower end of the lever 3.11s shown, tends to throw the contact rolleroutwardly from the axis of rotation of the carrier.

7 designates an annulus of insulating material provided with contactblocks 8 havingtheir inner surfaces flush with the inner surface of theannulus. This annulus is secured between a flange on a collar 9 and acup shaped cap 10, all forming a closed chamber.

The carrier 1 is journaled in the collar 9; and to relievethis collar offriction and wearing action by'the outward pressure of the contactroller, the carrier is also journaled in a central bearing provided inthe cap piece 10.

It will be observed that by this construction the parts forming theclosed chamber are supported on opposite sides of the revolving c ntactpiece.

The periphery of the contact roller is curved or formed in cross sectionto provide anarrow bearing,

and that face of the said roller which is more remote from the fulcrum3* made convex. The small shaft or hearing 1 upon which thc contactroller is mounted is somewhat longer than the thickness of the roller.

The said roller, therefore, has a play laterally with respect to itselfon the hearing. The narrow curved contacting rim or tread of the rollerpenetrates through oil or other foreign things on the surface of thecontact blocks 8 and thus insures an effective contact. The play of theroller on its shaft tends to keep thecontact surfaces clean and toproduce an even wear of the parts. As the force exerted by the spring 6upon the roller causes the roller to move outwardly in an arc of whichthe fulcrum 3 is the center, the wear on the roller will be toward theinner or convex face, and as the surface wears down the fact that theface is' c0nvexed prevents contact of the roller with that part of thecarrier adjacentsaid face.

The contact blocks 8 are crescent shaped in cross section and are seatedin corresponding sockets in the insulating annulus. The number of blocksis'inade to conform to the requirements of the engine used, the sparkershown being for a four-cylinder engine. Electrical connection is made asusual through posts 11 connecting the contact blocks and wires leading Ito the explosion chamber.

The chamber carrying the insulating annulus is provided with the usualarm 12 whereby it may be turned or adjusted to pry the time of sparking.

What I claim and desire to secure by Letters Patent is:

. 1. In u sparking dcvic :"or explosiv engines. the combination with arotary carrier. of a luv-r fulcruulcd to have the plane of itsoscillation substantially longitudinal with reference to the axis ofrotation of the carrier. :1 contact device on said lever. and aninsulating annulus conraining a contact piece against which the contactdevice on the lever operates.

2. In a sparking device for explosive engines, the combinntion with arotary carrier. of a lover fulcrulned to have the plane of itsoscillationsubstantially longitudinal with reference to the axis ofrotation of the carrier. a contact device on said lever. a spring to noton said lever to throw the contact device thereof outwardly. and aninsulating annulus containing a contact piece against which the contactdevice on the ever operates.

Ii. in a sparking device for explosive engines. the comhinatlon with arotary carrier. of a lever fulcrumcd to have the plane of itsoscillation substantially longitudinal with reference to the axis ofrotation of the carrier. :1 contact wheel journalcd on said lever torotate in a plane substantially at right angles to the plane ofoscillation of said lever. and an insulating annulus containing acontact piece against which the rotary contact piece operates.

l. In a sparking device for explosive engines. the com hination with arotary carrier. of a lever fulcrumed to have the plane of itsoscillation substantially longitudinal with reference to the axis ofrotation of the carrier. a bearing on said lover. a contact devicemounted on said hearing nnd having a play outwardly or axially thereon.an insulatingannulus containing a contact piece against which thecontact device of the lover operates.

5. In a sparking device for explosive engines, the com bination with arotary carrier. or a lover l'ulcrumed to have the plane of itsoscillation substantially longitudinal with refm'encs w th? axis ofrqtation of the carrier, mid bearing and having a pin out bearing onsaid levefl q contact whee! journaled on said on. saidyvhecl beingconvcx m hearing and having a play outwardly or axially thereon, fulcrumof the lever. andf-an insulating annulus containing a contact p'icce Infestimony whe reof l aliix m 1v 5 against which the Contactwheel/operates. of two witnesses.

6.; In a sp i-ki g dc 'ice for explosive engines, the combinat ionwi'tha o'tal'y a tier, of a lever fulcriimed thei'eon to have the plane ofits oscillation substantially longi- "VKUIQSSQS-Z tndinal witixcx'eference to the axis of rotation of the carllm'ssns R. En'rnus, 1Qriel a bearing on s irl lever, a contact wheel journnled on J BEXJ.Fmcmcnf

